Datasheet > 82077AA

82077AA

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
英特尔 - INTEL		控制器
页数	文件大小	规格书
62页	473K
描述
CHMOS SINGLE-CHIP FLOPPY DISK CONTROLLER

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82077AA 数据手册

82077AA

CHMOS SINGLE-CHIP FLOPPY DISK CONTROLLER

Single-Chip Floppy Disk Solution

Ð 100% PC AT* Compatible

Ð 100% PS/2* Compatible

Ð 100% PS/2 Model 30 Compatible

Ð Integrated Drive and Data Bus

Buffers

Integrated Tape Drive Support

12 mA Host Interface Drivers, 40 mA

Disk Drivers

Four Fully Decoded Drive Select and

Motor Signals

Programmable Write Precompensation

Delays

Integrated Analog Data Separator

Ð 250 Kbits/sec

Ð 300 Kbits/sec

Ð 500 Kbits/sec

Ð 1 Mbits/sec

Addresses 256 Tracks Directly,

Supports Unlimited Tracks

16 Byte FIFO

68-Pin PLCC

(See Packaging Spec., Order 240800, Package Type N)

High Speed Processor Interface

Perpendicular Recording Support

The 82077AA floppy disk controller has completely integrated all of the logic required for floppy disk control.

The 82077AA, a 24 MHz crystal, a resistor package and a device chip select implements a PC AT or PS/2

solution. All programmable options default to compatible values. The dual PLL data separator has better

performance than most board level/discrete PLL implementations. The FIFO allows better system perform-

ance in multi-master systems (e.g. PS/2, EISA). The 82077AA is available in three versionsÐ82077AA-5,

82077AA and 82077AA-1. 82077AA-1 has all features listed in this data sheet. It supports both tape drives and

4 Mb floppy drives. The 82077AA supports 4 Mb floppy drives and is capable of operation at all data rates

through 1 Mbps. The 82077AA-5 supports 500/300/250 Kbps data rates for high and low density floppy

drives.

The 82077AA is fabricated with Intel’s CHMOS III technology and is available in a 68-lead PLCC (plastic)

package.

290166–1

Figure 1. 82077AA Pinout

*PS/2 and PC AT are trademarks of IBM.

May 1994

Order Number: 290166-007

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型号	品牌	描述	获取价格	数据表
82077AA-1	INTEL	CHMOS SINGLE-CHIP FLOPPY DISK CONTROLLER	获取价格
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